Eosinophils
Last reviewed: 23.04.2024
All iLive content is medically reviewed or fact checked to ensure as much factual accuracy as possible.
We have strict sourcing guidelines and only link to reputable media sites, academic research institutions and, whenever possible, medically peer reviewed studies. Note that the numbers in parentheses ([1], [2], etc.) are clickable links to these studies.
If you feel that any of our content is inaccurate, out-of-date, or otherwise questionable, please select it and press Ctrl + Enter.
Eosinophils are cells, the phagocytizing complexes of Ar-AT, represented mainly by IgE. After maturation in the bone marrow, eosinophils for several hours (about 3-4) are in circulating blood, and then migrate to tissues where their life span is 8-12 days. For eosinophils, the daily rhythm of fluctuations in the blood is characteristic, the highest indices are recorded at night, the lowest ones are observed in the daytime. The action of eosinophils manifests itself in sensitized tissues. They are involved in hypersensitivity reactions of immediate and delayed type.
Reference values (norm) of the absolute and relative content of eosinophils in the blood
Age |
Absolute amount, × 10 9 / l |
Relative quantity,% |
12 months |
0.05-0.7 |
1-5 |
4 years |
0.02-0.7 |
1-5 |
10 years |
0-0.60 |
1-5 |
21 year |
0-0.45 |
1-5 |
Adults |
0-0.45 |
1-5 |
What do need to examine?
What tests are needed?